| 摘要 |
PURPOSE:To facilitate mating of grooves and to weld work pieces with sound and perfect penetration by providing a socket and spigot joint having a projecting part on the side of fayed surfaces to be made incident with electron beams and welding the fayed surfaces through the projecting part. CONSTITUTION:In the stage of mating the grooves of work pieces 1, 2, the fayed surfaces 1a, 1b are placed to face eash other and the projecting part 1b is fitted into a recess 2b, then the centerlines align to each other. If both surfaces are welded by irradiating an electron beam 3 through the incident surface 4 of the part 1b by aiming the butt surfaces of the intrinsic groove, the sound weld zone is obtained. If the part 1b remains without melting, the projecting part 1 is aimed by the electron beam 3' for the 2nd layer, whereby said part is welded partially without penetration. The similar effect is also obtained by making the section of the part 1b into a triangular or trapezoidal shape. |
